Install tmux from source on OSX

tmux.txt

Get the "Command line tools for XCode" installer from Apple, install.

Download ncurses
curl -O http://ftp.gnu.org/pub/gnu/ncurses/ncurses-5.9.tar.gz

tar zxvf ncurses
./configure --prefix=/Users/<user>
make
make install

Download libevent
curl -O https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
./configure --prefix=/Users/<user>
make
make install

Download tmux from github
git clone git://git.code.sf.net/p/tmux/tmux-code tmux-tmux-code
./autogen.sh

OR 

Download src (no .autogen.sh)
http://downloads.sourceforge.net/project/tmux/tmux/tmux-1.8/tmux-1.8.tar.gz

./configure CFLAGS="-I/Users/<user/include" LDFLAGS="-L/Users/<user>/lib" --prefix=/Users/<user>
make 
make install